Building circulation system using curtain wall as ventilator

ABSTRACT

A ventilation system for a high-rise building is disclosed. The ventilation system comprises an external curtain wall  200  disposed to surround the building. The external curtain wall is spaced apart outwardly from the outer wall  22  by a certain distance. An external air suction port  210  is disposed in lower story portion of the external curtain wall  200.  External air is introduced through the external air suction port  210.  An air stream exhaust port is provided in a space between the rooftop of the building and the upper end of the external curtain wall  200  extended horizontally to cover part of the rooftop of the building. The air stream exhaust port  220  has a pivot slit capable of being closed and opened. The external curtain wall  200  does not surround the entire four sides of the building, but part of the building sides is open without installing the external curtain wall  200  such that external air is directly introduced into the internal space of the building through a window  11  provided in the respective stories of the building, thereby using the external curtain wall as an exhausting space.

TECHNICAL FIELD

The present invention relates to a ventilation system for a high-rise building for blocking radiation heat of the sun from being transferred to the internal space and simultaneously for utilizing an external curtain wall as an exhausting space, and more particularly to a ventilation system for a high-rise building, in which an external curtain wall 200 is disposed to surround the building, the external curtain wall is spaced apart outwardly from the outer wall 22 by a certain distance, an external air suction port 210 is disposed in lower story portion of the external curtain wall 200, external air is introduced through the external air suction port 210, an air stream exhaust port is provided in a space between the rooftop of the building and the upper end of the external curtain wall 200 extended horizontally to cover part of the rooftop of the building, the air stream exhaust port 220 has a pivot slit capable of being closed and opened, the external curtain wall 200 does not surround the entire four sides of the building, but part of the building sides is open without installing the external curtain wall 200 such that external air is directly introduced into the internal space of the building through a window 11 provided in the respective stories of the building, thereby using the external curtain wall as an exhausting space.

BACKGROUND ART

In conventional high-rise buildings, an air duct provided in each story is connected to a single ventilation chamber. An air blower is used to forcible discharge the internal air collected in the ventilation chamber. Or a separate ventilation system provided in each story is used to directly discharge impure thick air from the respective stories. These conventional ventilation systems do not meet the required capacity for the internal space of each story. In addition, the system is complicated to increase the installation and maintenance cost, and to generate noises due to forcible ventilation, leading to discomfort to the residents.

Further, in case of a high-rise building (in particular, a recently popular residence-commercial combination building), the upper story portion thereof has a high internal temperature during the summer time due to radiation heat of the sun, thereby significantly increasing the operation cost of a cooling system. In certain cases, a comfort internal environment cannot be obtained, even if the cooling system is operated with a maximum load.

DISCLOSURE OF INVENTION Technical Problem

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the conventional art.

The first object of the present invention is to provide a ventilation system, in which natural ventilation mode and forcible ventilation mode are harmonized to minimize the maintenance cost of the ventilation system and enable to reduce operation noises of the ventilation system and discomforts to the residents.

The second object of the invention is to provide a ventilation system, in which the increase in the internal temperature by radiation heat of the sun can be prevented.

The third object of the invention is to provide a ventilation system, in which radiation heat of the sun can be effectively discharged by means of the chimney effect.

The fourth object of the invention is to provide a ventilation system, in which radiation heat of the sun can be blocked and the right of a view can be secured.

The fifth object of the invention is to provide a ventilation system, in which a separate vertical duct for exhaustion is not necessitated, thereby enabling to secure a maximum residential space.

The sixth object to of the invention is to provide a ventilation system, in which a fire can be prevented from being propagated into other stories, and the heating cost in winter can be saved by controlling so as not to generate the chimney effect in the winter season.

Technical Solution

In order to accomplish the above objects of the invention, according to one aspect of the invention, there is provided a ventilation system for a high-rise building, comprising: an external curtain wall 200 disposed to surround the building, the external curtain wall being spaced apart outwardly from the outer wall 22 by a certain distance; an external air suction port 210 disposed in lower story portion of the external curtain wall 200, external air being introduced through the external air suction port 210; and an air stream exhaust port 220 having a pivot slit capable of being closed and opened, the air stream exhaust port being provided in a space between the rooftop of the building and the upper end of the external curtain wall 200 extended horizontally to cover part of the rooftop of the building, wherein the external curtain wall 200 does not surround the entire four sides of the building, but part of the building sides is open without installing the external curtain wall 200 such that external air is directly introduced into the internal space of the building through a window 11 provided in the respective stories of the building, thereby using the external curtain wall as an exhausting space.

BRIEF DESCRIPTION OF DRAWINGS

Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a sectional view showing a ventilation system for high-rise building according to an embodiment of the present invention;

FIG. 2 is a plan view showing a ventilation system for high-rise buildings according to an embodiment of the invention;

FIG. 3 is a sectional view showing a ventilation system according to another embodiment of the present invention;

FIG. 4 is a sectional view showing a ventilation system according to a further embodiment of the present invention where a shielding glass is installed; and

FIG. 5 is a plan view showing the ventilation system having the shielding glass installed.

REFERENCE CHARACTERS FOR MAJOR COMPONENTS

-   100: Shielding glass 200: External curtain wall -   210: External air suction port -   220: Air stream exhaust port -   230: Forcible exhaust port -   235: Air blower 11: Window -   22: Outer wall 33: Internal space -   44: Solar heat shielding film -   55: Fire-retardant damper

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, exemplary embodiments of the present invention will be explained in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view of a ventilation system for high-rise buildings according to an embodiment of the present invention. FIG. 2 is a plan view of the ventilation system.

Referring to FIGS. 1 and 2, an external curtain wall 200 is disposed around three sides of a high-rise building, not all the four side thereof. That is, the external curtain wall 200 is not disposed in the remaining one side of the building.

For example, the external curtain wall 200 is disposed in the eastern, western and southern side of the building where receive sunlight, not in the northern side thereof. However, the sides of a building in which the external curtain wall 200 can be selected appropriately, considering the surrounding conditions and the like of the high-rise building.

In other words, where a high-rise building is built in the orientation as illustrated in FIG. 3, two southern sides thereof can be installed with the external curtain wall 200, and two northern sides can be installed with no external curtain wall 200.

Provided in the lower story portion of the external curtain wall 200 is an external air suction port 210 that can be closed and opened.

The upper end portion of the external curtain wall 200 is structured in such a way to be extended in horizontal direction and cover part of the rooftop of the building. An air stream exhaust port 220 is provided between the end portion of the extended external curtain wall 200 and the rooftop of the building. The air stream exhaust port 220 is formed of a damper that can be opened and closed.

A forcible exhaust port 230 is installed in parallel to the air stream exhaust port 220 and forms a separate exhausting space, as shown in FIG. 1.

In other words, the forcible exhaust port 230 is provided between the end portion of the extended external curtain wall 220 and the rooftop of the building, separately from the air stream exhaust port 220. The air stream exhaust port 220 is in charge of natural ventilation, and the forcible exhaust port 230 performs forcible ventilation using an air blower 235, which induces an artificial upstream air.

When the air blower 235 generates a forcible upstream air and exhausts the upstream air through the forcible exhaust port 230, it is desirable that the pivot slit is closed to block the air stream exhaust port 220. That is, in case where the air blower operates, if the air stream exhaust port 220 is open, the air near the air stream exhaust port 220 can flow back to the inside of the air stream exhaust portion 220, thereby degrading the effect of forcible exhaust.

The air blower 235 installed in the forcible exhaust port 230 may be set to automatically operate when the velocity of the upstream air being generated in the space between the external curtain wall 200 and the outer wall 22 of the high-rise building is decreased below a certain value.

As described above, part of the outer sides of the building is not provided with an external curtain wall 200. Therefore, as shown in FIG. 1, the external air is introduced into the internal space 33 through a window 11 provided in the building side where the external curtain wall 200 is not installed. Impure thick air in the internal space 33 is discharged through a space between the external curtain wall 200 and the outer wall 22, via a window 11 provided in the building side where the external curtain wall is installed.

As illustrated in FIGS. 1 and 4, the window 11 provided in the building side having the external curtain wall 200 is formed with a pivot in such a way that the upper side of the window 11 can be opened outwards, thereby enabling to discharge the internal thick air more efficiently.

The internal thick air, which is discharged through the space between the external curtain wall 200 and the outer wall 22, ascends along the upstream air and then is discharged through the air stream exhaust port 220 or the forcible exhaust port 230 to the outside.

In other words, the air introduced through the window 11 is circulated in the internal space 33, then led into the space between the external curtain wall 22 and the outer wall 22, ascends by the upstream air, and is discharged back to the outside through the air stream exhaust port 220 or the forcible exhaust port 230.

The external curtain wall 200 includes a glass. As enlarged in FIG. 1, a solar heat shielding film 44 is attached to the inner face of the glass.

In this way, the solar heat shielding film 44 prevents radiation heat of the sun from reaching the internal space 33. The temperature in the inner side of the external curtain wall 200, to which the solar heat shielding film 44 is attached, is increased.

If the temperature in the inner face of the external curtain wall 200 increases, resultantly the air temperature between the external curtain wall 200 and the outer wall 22 increases. This temperature increase induces an upstream air by the chimney effect. The heated air ascends along the upstream air to the upper end of the external curtain wall 200 and then is discharged through the air stream exhaust port 220 or the forcible exhaust port 230.

That is, the solar heat shielding film 44 blocks radiation heat of the sun from reaching the internal space 33. Simultaneously it induces the upstream air in the space between the external curtain wall 200 and the outer wall 22 so that the heated air in the inner side of the external curtain wall 200 can be prevented from being transferred to the internal space.

FIGS. 4 and 5 show a ventilation system according to another embodiment of the invention, in which a shielding glass 100 is further installed.

The shielding glass 100 is disposed in the space between the external curtain wall 200 and the outer wall 22 of a high-rise building in a way to be spaced apart from the external curtain wall 200 and the outer wall 22 respectively of the high-rise building.

Where this shielding glass 100 is installed, the solar heat shielding film 44 is attached to the surface (outer or inner surface) of the shielding glass 100.

In this way, the purpose of attaching the solar heat shielding film 44 on the surface of the shielding glass 100 is the same as in attaching the solar heat shielding film 44 on the inner face of the external curtain wall 200.

That is, the radiation heat of the sun is blocked from reaching the internal space 33. In this way, if the solar heat shielding film 44 is attached on the surface of the shielding glass 100, the surface temperature of the shielding glass 100 is increased by the sunlight.

In this way, if the surface temperature of the shielding glass 100 increases, consequently the air temperature between the external curtain wall 200 and the outer wall 22 increases. This increase in the air temperature generates an upstream air by means of the chimney effect. Thus, the heated air ascends along the upstream air up to the upper end portion of the external curtain wall 200 and is discharged through the air stream exhaust port 220 and the forcible exhaust port 230.

That is, the shielding glass 110 and the solar heat shielding film 44 are used to prevent radiation heat of the sun from reaching the internal space 33, and simultaneously generate an upstream air in the space between the external curtain wall 200 and the outer wall 22, so that the heated air on the surface of the shielding glass 100 can be blocked from being transferred to the internal space.

As illustrated in FIG. 4, this shielding glass 100 is installed so as to be spaced apart from the external curtain wall 200 and also from the outer wall 22 by a certain distance, so that the upstream air can be induced in both the outer and inner sides of the shielding glass 100.

As shown in FIGS. 1 and 4, a fire-retardant damper 55 is installed at the boundary area between neighboring stories in the space between the outer wall 22 and the external curtain wall 200 of a high-rise building. The fire-retardant damper includes a pivot slit so as to be closed and opened.

In this way, a fire-retardant damper 55 is installed at the boundary area between adjacent stories. Therefore, in the case of a fire, the pivot slit can be closed so that the fire can be prevented from propagating into the upper stories, which is caused by the upstream air.

The fire-retardant damper 55 may be configured in such a way that the pivot slit is automatically closed by sensing the fire (using a temperature or gas sensor), or is operated by a separate switch.

The external air suction port 210 is opened when the window 11 of the building is closed and an air cooler is operated. When the window 11 is closed, the external air is not supplied into the internal space and the internal air is not discharged. Thus, the external air suction port 210 is opened to introduce external air into the space between the external curtain wall 200 and the outer wall 22. The introduced air ascends to discharge, through the air stream exhaust port 220 or the forcible exhaust port 230, the heated air in the inner face of the curtain wall 200 or the surface of the shielding glass 100 to which the solar heat shielding film 44 is attached.

While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

INDUSTRIAL APPLICABILITY

As described, the technical effects of the present invention are as follows.

First, natural ventilation mode and forcible ventilation mode are harmonized to minimize the maintenance cost of the ventilation system and enable to reduce operation noises of the ventilation system and discomforts to the residents.

In other words, the external fresh air is supplied through the window 11 provided in the building side where the external curtain wall 200 is not installed. The internal thick air is discharged through the window 11 provided in the building side, where the external curtain wall 200 is installed, into the space between the curtain wall 200 and the outer wall 22. The discharged internal thick air ascends along the natural upstream air by means of the chimney effect, and is discharged to the outside through the air stream exhaust port 220. In case where the natural upstream air is not enough, the air blower 235 lifts forcibly the thick air and discharges it to the outside through the forcible exhaust port 230.

Thick, the natural ventilation mode by the chimney effect and the forcible ventilation mode by the air blower are harmonized to thereby achieve effective ventilation with a minimum operation cost.

Second, the increase in the internal temperature by radiation heat by the sun can be prevented.

In other words, the solar heat shield film 44 is attached to the inner face of the curtain wall 200 or the surface of the shielding glass 100 to block radiation heat of the sun from reaching the internal space 33 and thus dramatically reduce the cooling cost during the summer time.

In this way, if the solar heat shielding film 44 is attached, the temperature of the attached surface increases. In the present invention, the solar heat shielding film 44 is not attached to the window 11 of the high-rise building, but the external curtain wall 200 or a separate shielding glass 100, so that the heated air in the inner face of the external curtain wall 200 or the surface of the shielding glass 100 is discharged to the outside along the upstream air between the curtain wall 200 and the outer wall 22, thereby enabling to prevent effectively the temperature increase in the internal space 33 caused by sunlight. If the solar heat shielding film 44 is attached directly to the window 11, it can block radiation heat of the sun, but the temperature increase in the internal space cannot be avoided, due to the heated air of the heated window 11.

Third, radiation heat of the sun can be effectively discharged by means of the chimney effect.

In other words, if the temperature of the inner face of the external curtain wall 200 or the surface of the shielding glass 100 is increased by the solar heat shielding film 44, the temperature in the space between the curtain wall 200 and the outer wall 22 is also increased, thereby leading to more active upstream air. Therefore, the internal thick air can be transferred more rapidly into the upper story portion of the building and discharged to the outside through the air stream exhaust port 220 and the forcible exhaust port 230.

Fourth, radiation heat of the sun can be blocked and the right of a view can be secured.

In other words, the solar heat shielding film 44 does not always block all the sunlight, but par of visible lights can pass through the solar heat shielding film 44 to effectively block radiation heat of the sun while the right of a view is not infringed.

Fifth, a fire can be prevented from being propagated into other stories.

In other words, the fire-retardant damper 55, which has a pivot slit capable of being closed and opened, is installed at the boundary area between adjacent stories in the space between the external curtain wall 200 and the outer wall 22 of the building. When in a fire, the fire-retardant damper 55 is closed to prevent the fire from being propagated into the upper stories.

Sixth, the heating cost in winter can be saved by controlling so as not to generate the chimney effect in the winter season.

In other words, during the winter time, the external air suction port 210 is closed and the fire-retardant damper 55 is blocked so as not to generate an upstream air by the chimney effect in the space between the external curtain wall 200 and the outer wall 22. That is, the air between the external curtain wall 200 and the outer wall 22 can be heated and remains therein without discharging to the outside, thereby maximize the insulation effect and thus enable to reduce the internal heating cost.

Seventh, a separate vertical duct for exhaustion is not necessitated, thereby enabling to secure a maximum residential space. 

1. A ventilation system for a high-rise building, the ventilation system comprising: an external curtain wall disposed to surround the building, the external curtain wall being spaced apart outwardly from the outer wall by a certain distance; an external air suction port disposed in lower story portion of the external curtain wall, external air being introduced through the external air suction port; and an air stream exhaust port having a pivot slit capable of being closed and opened, the air stream exhaust port being provided in a space between the rooftop of the building and the upper end of the external curtain wall extended horizontally to cover part of the rooftop of the building, wherein the external curtain wall does not surround the entire four sides of the building, but part of the building sides is open without installing the external curtain wall such that external air is directly introduced into the internal space of the building through a window provided in the respective stories of the building, thereby using the external curtain wall as an exhausting space.
 2. The ventilation system according to claim 1, further comprising a solar heat shielding film attached to the inner face of a glass forming the external curtain wall.
 3. The ventilation system according to claim 1, further comprising: a shielding glass disposed in a space between the external curtain wall and the outer wall of the building so as to be spaced apart from both the external curtain wall and the outer wall of the building; and a solar heat shielding film attached to the surface of the shielding glass.
 4. The ventilation system according to claim 2, further comprising: a forcible exhaust port installed in parallel to the air stream exhaust port to thereby form a separate exhausting space; and an air blower disposed in the forcible exhaust port to forcibly induce an upstream air in the space between the external curtain wall and the outer wall of the building.
 5. The ventilation system according to claim 4, further comprising a fire-retardant damper having a pivot slit capable of being closed and opened, the fire-retardant damper being installed at boundary areas between adjacent stories in the space between the outer wall and the external curtain wall.
 6. The ventilation system according to claim 5, wherein the external air suction port is opened when the window of the building is closed and an air cooler is operated, and the air stream exhaust port is closed when the air blower generates forcibly an upstream air and discharges the upstream air through the forcible exhaust port.
 7. The ventilation system according to claim 5, wherein the fire-retardant damper is configured such that the pivot slit is automatically closed when in a fire, and the pivot slit is closed by means of a separate switch to block the upstream air when in winter.
 8. The ventilation system according to claim 5, wherein the window provided in the building side where the external curtain wall is installed is provided with a pivot axis at the lower portion thereof for the upper portion thereof to be opened outwardly.
 9. The ventilation system according to claim 3, further comprising: a forcible exhaust port installed in parallel to the air stream exhaust port to thereby form a separate exhausting space; and an air blower disposed in the forcible exhaust port to forcibly induce an upstream air in the space between the external curtain wall and the outer wall of the building.
 10. The ventilation system according to claim 9, further comprising a fire-retardant damper having a pivot slit capable of being closed and opened, the fire-retardant damper being installed at boundary areas between adjacent stories in the space between the outer wall and the external curtain wall.
 11. The ventilation system according to claim 10, wherein the external air suction port is opened when the window of the building is closed and an air cooler is operated, and the air stream exhaust port is closed when the air blower generates forcibly an upstream air and discharges the upstream air through the forcible exhaust port.
 12. The ventilation system according to claim 10, wherein the fire-retardant damper is configured such that the pivot slit is automatically closed when in a fire, and the pivot slit is closed by means of a separate switch to block the upstream air when in winter.
 13. The ventilation system according to claim 10, wherein the window provided in the building side where the external curtain wall is installed is provided with a pivot axis at the lower portion thereof for the upper portion thereof to be opened outwardly. 